tolong bantu yaaaa no 2 dan 5 soalnya di kumpulkan besok

2.) No, they don't. because based on the text above, it says "By the way I had borrowed some comics from you LAST SEMESTER". They're barely see each other.
4.)
a.) Greeting : dialog 1, dialog 2
b.) Showing gratitude : dialog 2,3
c.) Asking for apology : dialog 6